Concrete form



Oct- 4 J. N. HELTZ EL CONCRETE FORM Filed Nov. 4. 1925 2 Sheets-She et 1 Oct, 4, 1927.

J. N. HELTZEL CONCRETE FORM Filed Nov. 4'. 1925 2 Sheets-Sheet 2 Elbtovwua Patented Qct. 4, 1927.

' Jorrn n. HEn'rznL, or WARREN, onto.

concn srn roar/r.

. Application filed November 4, 1925. Serial nozeasoa The present invention relates to concrete forms, and aims to provide improvements in forms used for molding curbs, curbs and gutters, walls, sidewalks, and the like, this srapplication being in part a continuation of my copending application Serial No.'17,211 filed March 21, 1925 and disclosing improvements as over the concrete forms disclosed in said copending application. "Another object ofthe invention is the provision'of a concrete form includinga division plate which may be inserted and withdrawn transversely in a convenient and etlicient manner. Y A further object is the provision of novel means "for connecting spaced form rails or side members to hold them in spaced relation, as well as maintaining the side rails or members at each side in alinement and joined together, and which means is adapted to accommodate a division plate for movement into'and. out of theform transversely of the form without disturbing the side rails or members and otherparts of the form which. may remain in original position.

A still further object is the provision of means for simultaneously, orwith a single device, spacing the form rails or side members apart and joining the adjacent ends thereof, as well as accommodating a division plate in a convenient, practical and simple manner. Still another object is the provision in a form ofthe kind indicated of means for removably holding a face rail or similar form member which maybe detachedtransversely without separating other rails or form members of the form.

With the foregoing and-other objects in View, which will bev apparent as the description proceeds, the invention resides in the construction and arrangement or parts, as hereinafter described and claimed,'it being understood that changes can be made within the scope of what is claimed, without depart ing from the spirit of the invention.

The invention is illustrated in'the accompanying drawings, wlierein- Figurel is a perspective View of'a concrete rcu'rbiorm embodying the improvements.

Fig. 2 is a side elevation of a portion or" the form 'showingone of the joints.

Fig, 3 is a horizontal "section on the line 3 .3 of Fig. 2.

Fig.1,4 is aperspective view of a modified construction or a'spec'ial form.

Fig. 5 is a side elevation of the form shown inFigMl, showing one "of the joints of the form. Fig. 6. is a cross section on the line 66 of 'Figf5. v

v The concrete form shown in: Figs. 1, 2'and 3 is intended especially for producing street or road curbs, although the same or similar tormszmay' beaused formo'lding walls, side-- walks, and 1 similar structures, it being understood that the side rails or form members 14 '01 the formTmay-be of .difierent heights and may be spaced apart dilierent distances according to" the work to bedone. f Said rails or sideinemberslt are composed of sheet metal and have the webs 15',- forming the'side walls of the mold,'1and saidflrails-have the outturned tread and base fianges16 and 17, respectively, at the upper. and lower edges of the'websl The tread'flang'esm have :the

secondary downturned flanges 18,1and the base flanges 17 havelthe secondary upturned fianges19. j

Z'ln order to. connect the opposite rails or upper'terminals of the bars 21. The cross bar 22 serves as a spacer between the upper ends of the bars 21' to spacelthe bars 21 apart, so that the limbsfof the yoke have the slots 21 and spacers 22 are also wei-de'd' or otherwise secured between the lower terminals of theba'rs 21. The limbs .of theyoke may be eithervertical orinclined, according to the 'type of curb that isf'to be produced. As

shown, one limbo'f the yoke i-s'verticaland the other limb is inclined to"produce a battered curb, but both limbs mayrbe vertical when a straight curb is .tobe produced. Pins or dowelsx23 "are welded or otherwise secured tdthe opposite rsides' of'the bars-21, and donot enten'dlthrou'gh'tlre:slots "21, and said dowelsproject from'oppoisite "sides of the limbs "of the yoke.

Thejyokes 20 are disposed hetweenithead- 'ja'cent ends of the railsyland the frails "are wardly' and "downwardly betweenfthe base and tread flanges and are preferably flush with the ends of the rails. Said flanges 24 are conveniently provided by welding or otherwise securing angle irons 25 to the webs at the outer sides of the rail. The flanges 24 are provided with apertures 26 to receive the dowels 23, in order that the yoke andv rails may be moved together into engagement longitudinally of the form. It will be apparent that the yoke may be readily moved longitudinally of the form into engagement with the flanges 24 of a pair of rails, after which the next adjoining rails may be moved longitudinally into engagement with the yoke. The dowels 2-8 will aline the rails at the opposite sides, and maintain them in accurate alinement, and the yoke will also space the opposite rails apartthe desired distance, according to the length of the cross bar 22. The yoke thus serves as a. spacer or cross connection between the side rails or forms, as well as providing a joint member to connect the rails end to end.

Each yoke 20 is also adapted to accommodate a division plate 27 which may be in serted transversely through the slots21 of the limbs of the yoke. The division plate 27 is of a width to extend across the space between the opposite side rails or form members, so as to divide the curb or other concrete structure, and the division plate may also be used as an end wall for the mold. A suitable handle 28 is welded or otherwise secured to the division plate at one vertical side edge thereof for conveniently inserting and withdrawing the plate.

The division plates are readily inserted in the yokes after the form is set up, and it will be noted that the cross bars 22 of the yokes are spaced above the tread flanges of the rails 14 in order that a trowel or other finish ing tool may be moved over the concrete. under the bars 22 in finishing ofl the top surface of the. concrete. After the concrete has started to set, the division plates 27 may be withdrawn, and in pullingthe division plates out of the form transversely or through either side of the form, this will avoid disturbing or tearing up the concrete at the surface thereof. After the concrete has setthe rails and yokes may be removed by pulling them apart longitudinally, of the form.

The form shown in Figs. .4, 5 and 6 coinprises the relatively high back or outer rails 14, and the relatively low front or inner rails 14 on which are disposed the face rails 14. The rails ,14 and 14 are of the same cross-section as'the rails 14 hereinbefore described, but the rail 14 is of special crosssection, having the inwardly extending tread flange 16 on which the rail 14 is seate d, and having the outwardly extending base flange 17. The yoke 20 comprises the spaced side bars 21 forming one limb, the spaced side bars 21 forming the other limb, and the cross bar 22' secured between the upper terininals of saidside bars, spacers 22 being secured between the lower ends of the side bars. extend through the apertures of the end flanges 24 of the rails 14' similar to the construction shown in Figs. 1, 2 and 8. The bars 21 have dowels 23 extending through apertures in end flanges 24 with which the rails 14 are provided at their outer sides above the flanges 17",. Said bars 21 also have dowels 23 to extend through apertures in end flanges 24 at the inner sides of the rails 14 below the flanges 16 The dowels 23 and 23 are thus located at the outer and inner sides of the webs of the rails 14", but

the joint between the rails 14 is substantially the same as the joint between therails The division plate 27 is inserted through the slots of the limbs of the yoke 20, and has openings 28 adjacent to its vertical side edges to provide handles for conveniently inserting and withdrawing the division plate at either side of the form.

The face rail 14 is removably held by the yokes 20 and rails 14. Thus, apertured ears or lugs are secured to the opposite sides of the bars 21 of each yoke, and the rails 14 are seated on the flanges 16 of the rails 14 below the ears 40 with the ends of the rails 14 abutting the yokes. The flanges 16 and 17 of the rails 14 and the flanges. 16 have apertures 41 alining with the apertures of the ears 40, and rods 42 are inserted downwardly through the cars 40 and ape1- tures 41, thereby holding the rails 14 in place during the pouring of the concrete. Then, after the concrete has set sufliciently, the rods 42 may be withdrawn and the .rails 14 removed inwardly or transversely, thereby cxposing the face or inner side of the curb so that same may be finished ofl'by trowcls or other suitable finishing tools, the rails 14 I and 14 and yokes 20 remaining assembled after the rails 14 are removed. f

Having thus described the what is claimed as new is 1. A joint member to be disposed between other members of a concrete form, and a division platc slidable through said joint member to be projected. into and withdrawn from the form. I i

2. A joint member for a concrete form having a slot for the passage of a division plate therethrough.

3. A joint. member for a concrete form having a slot for the insertion of a division plate and having dowels at opposite sides of said slot for the engagement of other form members. v

4. A yoke for use in a concrete form, and a division plate slidable through one limb of said yoke.

invention.

The bars 21 have the dowels 23 to 7 res-arise 5. A yoke for use ina Concrete form having one limb provided with a'slot tor the insertion of a division plate.

6. A yoke for use in a concrete form, and a division plate slid-able inthe limbs of the yoke, said limbs'ha-ving dowel-s at opposite sides for the engagement of other form members. r

7. A yoke for use in a concrete term whose limbsare provided with slots for the insertion of a division plate and dowels at the opposite sides of the limbs for the engagement of other form members.

8. A concrete form comprising rails disposed end to end, a joint member between the ends of said rails, and a division plate slidable horizontally through said joint member between the ends of the rails.

9. A concrete form comprising rails disposed end to end, and a joint member disposed between the ends of said rails and having a slot for the passage of a division plate.

10. A concrete form comprising opposite side rails disposed end to end, a yoke having limbs disposed between the ends of the rails at opposite sides, and a division plate slidable horizontally in the limbs of said yoke.

11. A concrete form comprising opposite side rails disposed end to end, and a yoke having limbs disposed between the ends of the rails at the opposite sides, said limbs having slots for the insertion of a division plate.

12. A concrete form comprising rails disposed end to end, a joint member having spaced bars, said bars and rails having interengaging portions, and a division plate slidable horizontally between said bars.

13. A concrete form comprising opposite side rails disposed end to end, a yoke having limbs disposed between the ends of the rails at the opposite sides, each limbbeing con posed of spaced bars, said bars and rails having inter-engaging portions, and a division plate movable horizontally between said bars.

1a. A concrete form comprising rails dis posed end to end, joint members between the ends of said rails, said rails and mem bers having interengaging portions, other rails disposed between said members and removable transversely from between them, and means for holding the lastnamed rails in place.

' 15. A concrete form comprising rails disposed end to end, joint members between the ends of said rails, said rails and members having interengaging portions, other rails disposed between said members and removable transversely from between them, and rods insertable through the lastnamed rails, said members having portions for the engagement of said rods.

16. A concrete form comprising opposite side rails disposed-end 'to end, and including lower and upper rails at one side, yokes hav mg their l mbs disposed between the em 0fthe rails at the opposite sides, said lower rails and the opposite side rails and yoke having portions fit-ted together longitudi' nal'ly of the rails, said upper rails. being removable transversely from between. the yokes, and means for holding said upper rails in place.

17. A concrete formcomprising opposite siderails disposed end to end, and including lower and upper rails at one side, yokes having their limbs disposed between the ends of the ralls at the opposite s1des, sa1d lower rails and the opposite side rails and yoke having portions fitted together longitudinally of the rails, said upper rails being removable transversely from between the yokes, and rods insertable through the end portions of said upper rails and into said lower rails, the yokes having apertured portions to receive said rods. I

18. A concrete form comprising rails disposed end to end, a joint device between the ends thereof, and rods connecting said rails and device.

19. A concrete form comprising rails disposed end to end and having upper and lower flanges, a joint device'betweenthe be disposed between the ends of rails, and

rail engaging rods, said device having portions to receive said rods.

22. In a concrete form, a joint device to be disposed between the ends of rails and having projecting portions, and rods engageable through said portions and adapted to engage the rails.

23. A concrete form comprising rails dis posed end to end, a joint device at the adj a cent ends of the rails, and rods extending through said rails, said device having portions to receive said rods.

24. A concrete form comprising rails dis posed end to end, a yoke member having portions projecting therefrom, and rods engaging through said portions and rails for con necting the rails and yoke member together.

25. A concrete form comprising opposite side members disposed end to end, a yoke at the adjacent end portions of said members, and means for securing said members to said yoke to prevent longitudinal separation thereof.

ill") 26. A concrete'form comprising side members disposed end to end, a joint device at the adjacent ends thereof, and means for securing said members'and' device together 5 and adapted to release said members for lateral movement away from said device.

27. A concrete form comprising side members, a joint device at the adjacent ends thereof, and removable securing means for 10 holding said members and device together against separation, said members being reand means for securing said members and device together in abutment and adapted to release said members for transverse removal. In testimony whereof I hereunto affix my signature.

JOHN N. HELTZEL. 

